->''"It is sometimes an appropriate response to reality to go insane."''
-->-- '''PhilipKDick''', ''{{VALIS}}''

-> ''Disillusioned and embittered by his parents' words, the child was broken physically, broken mentally. The men in white placed him in the rolling chairs, how he laughed! How he laughed!"''
-->--''CryOfFear''

-> At the moment when it was most horrible, the laugh of a demon, a laugh which one can only give vent to when one is no longer human, burst forth on the priest's livid face. Quasimodo did not hear that laugh, but he saw it.
-->--''HunchbackOfNotreDame''

->''He stood in the middle of it all in a puddle of blood as more poured down his front and it was almost ironic that a few heartbeats later [[Franchise/HarryPotter Harry]] was hit by another stray curse. Clark had joined the fray with his mother and luckily his jinx was almost harmless. It only banished the top part of his clothes away and that was when Harry started shaking. In the end it wasn't the teachers that stopped the chaos building inside the ballroom…it was the sound of sharp cold laughter.''
->''It pulled everyone's attention as they turned their eyes to Harry who stood bleeding with a star burst wound on his chest blood flowing from him steadily as he laughed. Harry laughed harshly with no humor as he raised a shaking hand to his face inspecting the blood painted on it before he fisted his hair with both hands and cackled brokenly. Blood was smeared across his face; he was covered in spatters of blood giving him a ghastly image. The cool rush of the air reminded him that now most of his worst scars were on display and made him cackle harder.''
-->--''FanFic/TheJadedEyesSeries''

-> [[DramaticDeadpan HA.]]
-> HA HA HA.
-> FFNK.
-> AHOO.
-> AHOO HOO
-> HOO HOO
-> HOO
-> HOO.
-> '' '''[[http://i10.photobucket.com/albums/a142/kogure/comiics/Batman-TheKillingJoke33.jpg EHRRR]]''' ''
-> '''HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA'''
-> '''HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA'''
-> '''HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA'''
-> '''HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA'''
-> '''HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA'''
-> '''HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA'''
-> '''HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA'''
-->-- '''SelfDemonstrating/TheJoker''' ''on [[GoMadFromTheRevelation seeing the chemical damage to his face]]'', ''ComicBook/TheKillingJoke''

-> ''"Ha, I'm no masochist, my friend!" Twilight was shaking her head in response to the other pony's inquiry, gasping for breath from her half-shrieks. "Heheh, haven't you heard that, hahaha, laughter a way to trick your body into, haha, not feeling pain?!" Her smile widened as she managed to dodge [[spoiler: Fluttershy]]'s frenzied attacks, angling herself to more easily control the blood flow from her wound. "Heheheh, that's why I laugh, [[spoiler: Fluttershy]]! It enhances me! I sill feel pain, but, heheheh, it's not enough to kill me!" Her eyes were bright despite the obvious pain in her body, practically drunk with the imagined extent of her plan and the laughter which accompanied it. "Imagining helps too, just as I'm doing now, ha, thinking of just how existence will be when I've helped purify it under my guidance as a good friend and teacher! [=HahahahaHA=]!"''
-->-- '''Twilight Sparkle''', ''Fanfic/PagesOfHarmony''

-> ''The record will show...that when the verdict was announced, special witness [[spoiler: Kristoph Gavin]]...laughed. A laugh louder than any ever heard before...or since. A laugh that echoed in the halls of justice, lingering for what seemed like hours.''
-->-- ''VisualNovel/ApolloJusticeAceAttorney''

->"He made out it spoke to him...and [[EldritchAbomination then the Others came]]."
->"Can I meet him?"
->"What for? He don't remember. They took him up the County, you know. They put him right. They can do that. He don't care a button he just la-a-a-ughs all the time!"
-->-- '''Film/TheStoneTape'''